<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>表格</title>
    <link rel="stylesheet" href="css_table.css">
</head>
<body>
    <table>
        <caption>产品月销量表</caption>
        <thead>
            <tr>  
                <th>ID</th>  
                <th>产品名称</th>  
                <th>销量</th>  
            </tr>  
        </thead>
        <tbody>
            <tr>  
                <td>2021090901</td>  
                <td>马克杯</td>  
                <td>5000</td>  
            </tr>  
            <tr>  
                <td>2021090901</td>
                <td>啤酒杯</td>  
                <td>5200</td>  
            </tr>  
            <tr>  
                <td>2021090901</td>
                <td>塘瓷杯</td>  
                <td>3500</td>  
            </tr>  
        </tbody>
        <tfoot>
            <tr>  
                <td colspan="2">合计</td>  
                <td>13700</td>  
            </tr> 
        </tfoot>
    </table>
</body>
</html>